Spring Cloud Admin健康检查邮件、钉钉群通知

源码地址：https://github.com/muxiaonong/Spring-Cloud/tree/master/cloudadmin

Admin 简介

官方文档：What is Spring Boot Admin?

SpringBootAdmin是一个用于管理和监控SpringBoot微服务的社区项目，可以使用客户端注册或者Eureka服务发现向服务端提供监控信息。注意，服务端相当于提供UI界面，实际的监控信息由客户端Actuator提供通过SpringBootAdmin，你可以通过华丽大气的界面访问到整个微服务需要的监控信息，例如服务健康检查信息、CPU、内存、操作系统信息等等

本篇文章使用SpringBoot 2.3.3.RELEASE、SpringCloud Hoxton.SR6、SpringBoot Admin 2.2.3版本，此外，服务注册中心采用eureka

一、SpringCloud使用SpringBoot Admin

1.1 创建一个SpringBoot项目，命名为admin-test，引入如下依赖

<!–Admin服务–>
<dependency>
<groupId>de.codecentric</groupId>
<artifactId>spring-boot-admin-starter-server</artifactId>
<version>2.2.1</version>
</dependency>
<!–Admin界面–>
<dependency>
<groupId>de.codecentric</groupId>
<artifactId>spring-boot-admin-server-ui</artifactId>
<version>2.2.1</version>
</dependency>

1.2 启动类

@SpringBootApplication
@EnableAdminServer
publicclassAdminTestApplication{
publicstaticvoidmain(String[]args){
SpringApplication.run(AdminTestApplication.class,args);
}
}

1.3 配置文件

spring.application.name=admin-test
management.endpoints.jmx.exposure.include=*
management.endpoints.web.exposure.include=*
management.endpoint.health.show-details=always
#springcloudaccess&secretconfig
alibaba.cloud.access-key=****
alibaba.cloud.secret-key=****

1.4 启动项目

输入项目地址：http://localhost:8080/applications

二、配置邮件通知

2.1 pom

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>

2.2 邮件配置

spring.mail.host=smtp.qq.com
spring.mail.username=单纯QQ号
spring.mail.password=授权码
spring.mail.properties.mail.smpt.auth=true
spring.mail.properties.mail.smpt.starttls.enable=true
spring.mail.properties.mail.smpt.starttls.required=true
#收件邮箱
spring.boot.admin.notify.mail.to=xxxx@qq.com
#发件邮箱
spring.boot.admin.notify.mail.from=xxxx@qq.com

2.3 QQ邮箱设置

找到自己的QQ邮箱

QQ邮箱》设置》账户》红框处获取授权码

我们将 consumer 服务下线后，

接着我们就收到了邮件通知，告诉我们服务关闭了

三、发送钉钉群通知

找到群里面的群设置》智能群助手》添加机器人

注意：这里的自定义关键词一定要和项目的关键字匹配

获取 Webhook 到项目中，这个是后面要使用到的

启动类：

importorg.springframework.boot.SpringApplication;
importorg.springframework.boot.autoconfigure.SpringBootApplication;
importorg.springframework.context.annotation.Bean;
importde.codecentric.boot.admin.server.config.EnableAdminServer;
importde.codecentric.boot.admin.server.domain.entities.InstanceRepository;
@SpringBootApplication
@EnableAdminServer
publicclassAdminApplication{
publicstaticvoidmain(String[]args){
SpringApplication.run(AdminApplication.class,args);
}
@Bean
publicDingDingNotifierdingDingNotifier(InstanceRepositoryrepository){
returnnewDingDingNotifier(repository);
}
}

通知类：

importjava.util.Map;
importcom.alibaba.fastjson.JSONObject;
importde.codecentric.boot.admin.server.domain.entities.Instance;
importde.codecentric.boot.admin.server.domain.entities.InstanceRepository;
importde.codecentric.boot.admin.server.domain.events.InstanceEvent;
importde.codecentric.boot.admin.server.notify.AbstractStatusChangeNotifier;
importreactor.core.publisher.Mono;
publicclassDingDingNotifierextendsAbstractStatusChangeNotifier{
publicDingDingNotifier(InstanceRepositoryrepository){
super(repository);
}
@Override
protectedMono<Void>doNotify(InstanceEventevent,Instanceinstance){
StringserviceName=instance.getRegistration().getName();
StringserviceUrl=instance.getRegistration().getServiceUrl();
Stringstatus=instance.getStatusInfo().getStatus();
Map<String,Object>details=instance.getStatusInfo().getDetails();
StringBuilderstr=newStringBuilder();
str.append("服务预警:【"+serviceName+"】");
str.append("【服务地址】"+serviceUrl);
str.append("【状态】"+status);
str.append("【详情】"+JSONObject.toJSONString(details));
returnMono.fromRunnable(()->{
DingDingMessageUtil.sendTextMessage(str.toString());
});
}
}

发送工具类

importjava.io.InputStream;
importjava.io.OutputStream;
importjava.net.HttpURLConnection;
importjava.net.URL;
importcom.alibaba.fastjson.JSONObject;
publicclassDingDingMessageUtil{
publicstaticStringaccess_token="Token";
publicstaticvoidsendTextMessage(Stringmsg){
try{
Messagemessage=newMessage();
message.setMsgtype("text");
message.setText(newMessageInfo(msg));
URLurl=newURL("https://oapi.dingtalk.com/robot/send?access_token="+access_token);
//建立http连接
HttpURLConnectionconn=(HttpURLConnection)url.openConnection();
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestMethod("POST");
conn.setRequestProperty("Charset","UTF-8");
conn.setRequestProperty("Content-Type","application/Json;charset=UTF-8");
conn.connect();
OutputStreamout=conn.getOutputStream();
StringtextMessage=JSONObject.toJSONString(message);
byte[]data=textMessage.getBytes();
out.write(data);
out.flush();
out.close();
InputStreamin=conn.getInputStream();
byte[]data1=newbyte[in.available()];
in.read(data1);
System.out.println(newString(data1));
}catch(Exceptione){
e.printStackTrace();
}
}
}